1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
5 *
6 ******************************************************************************/
7 #define _IEEE80211_C
8
9 #include <linux/ieee80211.h>
10
11 #include <drv_types.h>
12 #include <osdep_intf.h>
13 #include <ieee80211.h>
14 #include <wifi.h>
15 #include <osdep_service.h>
16 #include <wlan_bssdef.h>
17
18 u8 RTW_WPA_OUI_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
19 u8 WPA_AUTH_KEY_MGMT_NONE[] = { 0x00, 0x50, 0xf2, 0 };
20 u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x50, 0xf2, 1 };
21 u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x50, 0xf2, 2 };
22 u8 WPA_CIPHER_SUITE_NONE[] = { 0x00, 0x50, 0xf2, 0 };
23 u8 WPA_CIPHER_SUITE_WEP40[] = { 0x00, 0x50, 0xf2, 1 };
24 u8 WPA_CIPHER_SUITE_TKIP[] = { 0x00, 0x50, 0xf2, 2 };
25 u8 WPA_CIPHER_SUITE_WRAP[] = { 0x00, 0x50, 0xf2, 3 };
26 u8 WPA_CIPHER_SUITE_CCMP[] = { 0x00, 0x50, 0xf2, 4 };
27 u8 WPA_CIPHER_SUITE_WEP104[] = { 0x00, 0x50, 0xf2, 5 };
28
29 u16 RSN_VERSION_BSD = 1;
30 u8 RSN_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x0f, 0xac, 1 };
31 u8 RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x0f, 0xac, 2 };
32 u8 RSN_CIPHER_SUITE_NONE[] = { 0x00, 0x0f, 0xac, 0 };
33 u8 RSN_CIPHER_SUITE_WEP40[] = { 0x00, 0x0f, 0xac, 1 };
34 u8 RSN_CIPHER_SUITE_TKIP[] = { 0x00, 0x0f, 0xac, 2 };
35 u8 RSN_CIPHER_SUITE_WRAP[] = { 0x00, 0x0f, 0xac, 3 };
36 u8 RSN_CIPHER_SUITE_CCMP[] = { 0x00, 0x0f, 0xac, 4 };
37 u8 RSN_CIPHER_SUITE_WEP104[] = { 0x00, 0x0f, 0xac, 5 };
38 /* */
39 /* for adhoc-master to generate ie and provide supported-rate to fw */
40 /* */
41
42 static u8 WIFI_CCKRATES[] = {
43 IEEE80211_CCK_RATE_1MB | IEEE80211_BASIC_RATE_MASK,
44 IEEE80211_CCK_RATE_2MB | IEEE80211_BASIC_RATE_MASK,
45 IEEE80211_CCK_RATE_5MB | IEEE80211_BASIC_RATE_MASK,
46 IEEE80211_CCK_RATE_11MB | IEEE80211_BASIC_RATE_MASK
47 };
48
49 static u8 WIFI_OFDMRATES[] = {
50 IEEE80211_OFDM_RATE_6MB,
51 IEEE80211_OFDM_RATE_9MB,
52 IEEE80211_OFDM_RATE_12MB,
53 IEEE80211_OFDM_RATE_18MB,
54 IEEE80211_OFDM_RATE_24MB,
55 IEEE80211_OFDM_RATE_36MB,
56 IEEE80211_OFDM_RATE_48MB,
57 IEEE80211_OFDM_RATE_54MB
58 };
59
rtw_get_bit_value_from_ieee_value(u8 val)60 int rtw_get_bit_value_from_ieee_value(u8 val)
61 {
62 static const unsigned char dot11_rate_table[] = {
63 2, 4, 11, 22, 12, 18, 24, 36, 48,
64 72, 96, 108, 0}; /* last element must be zero!! */
65 int i = 0;
66
67 while (dot11_rate_table[i] != 0) {
68 if (dot11_rate_table[i] == val)
69 return BIT(i);
70 i++;
71 }
72 return 0;
73 }
74
rtw_is_cckrates_included(u8 * rate)75 bool rtw_is_cckrates_included(u8 *rate)
76 {
77 while (*rate) {
78 u8 r = *rate & 0x7f;
79
80 if (r == 2 || r == 4 || r == 11 || r == 22)
81 return true;
82 rate++;
83 }
84
85 return false;
86 }
87
rtw_is_cckratesonly_included(u8 * rate)88 bool rtw_is_cckratesonly_included(u8 *rate)
89 {
90 while (*rate) {
91 u8 r = *rate & 0x7f;
92
93 if (r != 2 && r != 4 && r != 11 && r != 22)
94 return false;
95 rate++;
96 }
97
98 return true;
99 }
100
rtw_check_network_type(unsigned char * rate)101 int rtw_check_network_type(unsigned char *rate)
102 {
103 /* could be pure B, pure G, or B/G */
104 if (rtw_is_cckratesonly_included(rate))
105 return WIRELESS_11B;
106 else if (rtw_is_cckrates_included(rate))
107 return WIRELESS_11BG;
108 else
109 return WIRELESS_11G;
110 }
111
rtw_set_fixed_ie(void * pbuf,unsigned int len,void * source,unsigned int * frlen)112 u8 *rtw_set_fixed_ie(void *pbuf, unsigned int len, void *source,
113 unsigned int *frlen)
114 {
115 memcpy(pbuf, source, len);
116 *frlen = *frlen + len;
117 return ((u8 *)pbuf) + len;
118 }
119
120 /* rtw_set_ie will update frame length */
rtw_set_ie(u8 * pbuf,int index,uint len,u8 * source,uint * frlen)121 u8 *rtw_set_ie
122 (
123 u8 *pbuf,
124 int index,
125 uint len,
126 u8 *source,
127 uint *frlen /* frame length */
128 )
129 {
130 *pbuf = (u8)index;
131
132 *(pbuf + 1) = (u8)len;
133
134 if (len > 0)
135 memcpy((void *)(pbuf + 2), (void *)source, len);
136
137 *frlen = *frlen + (len + 2);
138
139 return pbuf + len + 2;
140 }
141
142 /*
143 * ----------------------------------------------------------------------------
144 * index: the information element id index, limit is the limit for search
145 * ----------------------------------------------------------------------------
146 */
rtw_get_ie(u8 * pbuf,int index,uint * len,int limit)147 u8 *rtw_get_ie(u8 *pbuf, int index, uint *len, int limit)
148 {
149 int tmp, i;
150 u8 *p;
151
152 if (limit < 1)
153 return NULL;
154
155 p = pbuf;
156 i = 0;
157 *len = 0;
158 while (1) {
159 if (*p == index) {
160 *len = *(p + 1);
161 return p;
162 }
163 tmp = *(p + 1);
164 p += (tmp + 2);
165 i += (tmp + 2);
166 if (i >= limit)
167 break;
168 }
169 return NULL;
170 }
171
rtw_set_supported_rate(u8 * SupportedRates,uint mode)172 void rtw_set_supported_rate(u8 *SupportedRates, uint mode)
173 {
174 memset(SupportedRates, 0, NDIS_802_11_LENGTH_RATES_EX);
175
176 switch (mode) {
177 case WIRELESS_11B:
178 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
179 break;
180 case WIRELESS_11G:
181 case WIRELESS_11A:
182 case WIRELESS_11_5N:
183 case WIRELESS_11A_5N:/* Todo: no basic rate for ofdm ? */
184 memcpy(SupportedRates, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
185 break;
186 case WIRELESS_11BG:
187 case WIRELESS_11G_24N:
188 case WIRELESS_11_24N:
189 case WIRELESS_11BG_24N:
190 memcpy(SupportedRates, WIFI_CCKRATES, IEEE80211_CCK_RATE_LEN);
191 memcpy(SupportedRates + IEEE80211_CCK_RATE_LEN, WIFI_OFDMRATES, IEEE80211_NUM_OFDM_RATESLEN);
192 break;
193 }
194 }
195
rtw_get_rateset_len(u8 * rateset)196 uint rtw_get_rateset_len(u8 *rateset)
197 {
198 uint i;
199
200 for (i = 0; i < 13; i++)
201 if (rateset[i] == 0)
202 break;
203 return i;
204 }
205
rtw_generate_ie(struct registry_priv * pregistrypriv)206 int rtw_generate_ie(struct registry_priv *pregistrypriv)
207 {
208 u8 wireless_mode;
209 int rateLen;
210 uint sz = 0;
211 struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
212 u8 *ie = pdev_network->ies;
213
214 /* timestamp will be inserted by hardware */
215 sz += 8;
216 ie += sz;
217
218 /* beacon interval : 2bytes */
219 *(__le16 *)ie = cpu_to_le16((u16)pdev_network->Configuration.BeaconPeriod);/* BCN_INTERVAL; */
220 sz += 2;
221 ie += 2;
222
223 /* capability info */
224 *(u16 *)ie = 0;
225
226 *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_IBSS);
227
228 if (pregistrypriv->preamble == PREAMBLE_SHORT)
229 *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
230
231 if (pdev_network->Privacy)
232 *(__le16 *)ie |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
233
234 sz += 2;
235 ie += 2;
236
237 /* SSID */
238 ie = rtw_set_ie(ie, WLAN_EID_SSID, pdev_network->ssid.ssid_length, pdev_network->ssid.ssid, &sz);
239
240 /* supported rates */
241 if (pregistrypriv->wireless_mode == WIRELESS_11ABGN)
242 wireless_mode = WIRELESS_11BG_24N;
243 else
244 wireless_mode = pregistrypriv->wireless_mode;
245
246 rtw_set_supported_rate(pdev_network->SupportedRates, wireless_mode);
247
248 rateLen = rtw_get_rateset_len(pdev_network->SupportedRates);
249
250 if (rateLen > 8) {
251 ie = rtw_set_ie(ie, WLAN_EID_SUPP_RATES, 8, pdev_network->SupportedRates, &sz);
252 /* ie = rtw_set_ie(ie, WLAN_EID_EXT_SUPP_RATES, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz); */
253 } else {
254 ie = rtw_set_ie(ie, WLAN_EID_SUPP_RATES, rateLen, pdev_network->SupportedRates, &sz);
255 }
256
257 /* DS parameter set */
258 ie = rtw_set_ie(ie, WLAN_EID_DS_PARAMS, 1, (u8 *)&pdev_network->Configuration.DSConfig, &sz);
259
260 /* IBSS Parameter Set */
261
262 ie = rtw_set_ie(ie, WLAN_EID_IBSS_PARAMS, 2, (u8 *)&pdev_network->Configuration.ATIMWindow, &sz);
263
264 if (rateLen > 8)
265 ie = rtw_set_ie(ie, WLAN_EID_EXT_SUPP_RATES, (rateLen - 8), (pdev_network->SupportedRates + 8), &sz);
266
267 return sz;
268 }
269
rtw_get_wpa_ie(unsigned char * pie,uint * wpa_ie_len,int limit)270 unsigned char *rtw_get_wpa_ie(unsigned char *pie, uint *wpa_ie_len, int limit)
271 {
272 uint len;
273 u16 val16;
274 __le16 le_tmp;
275 static const unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01};
276 u8 *pbuf = pie;
277 int limit_new = limit;
278
279 while (1) {
280 pbuf = rtw_get_ie(pbuf, WLAN_EID_VENDOR_SPECIFIC, &len, limit_new);
281
282 if (pbuf) {
283 /* check if oui matches... */
284 if (memcmp((pbuf + 2), wpa_oui_type, sizeof(wpa_oui_type)))
285 goto check_next_ie;
286
287 /* check version... */
288 memcpy((u8 *)&le_tmp, (pbuf + 6), sizeof(val16));
289
290 val16 = le16_to_cpu(le_tmp);
291 if (val16 != 0x0001)
292 goto check_next_ie;
293 *wpa_ie_len = *(pbuf + 1);
294 return pbuf;
295 }
296 *wpa_ie_len = 0;
297 return NULL;
298
299 check_next_ie:
300 limit_new = limit - (pbuf - pie) - 2 - len;
301 if (limit_new <= 0)
302 break;
303 pbuf += (2 + len);
304 }
305 *wpa_ie_len = 0;
306 return NULL;
307 }
308
rtw_get_wpa2_ie(unsigned char * pie,uint * rsn_ie_len,int limit)309 unsigned char *rtw_get_wpa2_ie(unsigned char *pie, uint *rsn_ie_len, int limit)
310 {
311 return rtw_get_ie(pie, WLAN_EID_RSN, rsn_ie_len, limit);
312 }
313
rtw_get_wpa_cipher_suite(u8 * s)314 int rtw_get_wpa_cipher_suite(u8 *s)
315 {
316 if (!memcmp(s, WPA_CIPHER_SUITE_NONE, WPA_SELECTOR_LEN))
317 return WPA_CIPHER_NONE;
318 if (!memcmp(s, WPA_CIPHER_SUITE_WEP40, WPA_SELECTOR_LEN))
319 return WPA_CIPHER_WEP40;
320 if (!memcmp(s, WPA_CIPHER_SUITE_TKIP, WPA_SELECTOR_LEN))
321 return WPA_CIPHER_TKIP;
322 if (!memcmp(s, WPA_CIPHER_SUITE_CCMP, WPA_SELECTOR_LEN))
323 return WPA_CIPHER_CCMP;
324 if (!memcmp(s, WPA_CIPHER_SUITE_WEP104, WPA_SELECTOR_LEN))
325 return WPA_CIPHER_WEP104;
326
327 return 0;
328 }
329
rtw_get_wpa2_cipher_suite(u8 * s)330 int rtw_get_wpa2_cipher_suite(u8 *s)
331 {
332 if (!memcmp(s, RSN_CIPHER_SUITE_NONE, RSN_SELECTOR_LEN))
333 return WPA_CIPHER_NONE;
334 if (!memcmp(s, RSN_CIPHER_SUITE_WEP40, RSN_SELECTOR_LEN))
335 return WPA_CIPHER_WEP40;
336 if (!memcmp(s, RSN_CIPHER_SUITE_TKIP, RSN_SELECTOR_LEN))
337 return WPA_CIPHER_TKIP;
338 if (!memcmp(s, RSN_CIPHER_SUITE_CCMP, RSN_SELECTOR_LEN))
339 return WPA_CIPHER_CCMP;
340 if (!memcmp(s, RSN_CIPHER_SUITE_WEP104, RSN_SELECTOR_LEN))
341 return WPA_CIPHER_WEP104;
342
343 return 0;
344 }
345
rtw_parse_wpa_ie(u8 * wpa_ie,int wpa_ie_len,int * group_cipher,int * pairwise_cipher,int * is_8021x)346 int rtw_parse_wpa_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
347 {
348 int i, ret = _SUCCESS;
349 int left, count;
350 u8 *pos;
351 u8 SUITE_1X[4] = {0x00, 0x50, 0xf2, 1};
352
353 if (wpa_ie_len <= 0) {
354 /* No WPA IE - fail silently */
355 return _FAIL;
356 }
357
358 if ((*wpa_ie != WLAN_EID_VENDOR_SPECIFIC) || (*(wpa_ie + 1) != (u8)(wpa_ie_len - 2)) ||
359 (memcmp(wpa_ie + 2, RTW_WPA_OUI_TYPE, WPA_SELECTOR_LEN)))
360 return _FAIL;
361
362 pos = wpa_ie;
363
364 pos += 8;
365 left = wpa_ie_len - 8;
366
367 /* group_cipher */
368 if (left >= WPA_SELECTOR_LEN) {
369 *group_cipher = rtw_get_wpa_cipher_suite(pos);
370 pos += WPA_SELECTOR_LEN;
371 left -= WPA_SELECTOR_LEN;
372 } else if (left > 0) {
373 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
374 return _FAIL;
375 }
376
377 /* pairwise_cipher */
378 if (left >= 2) {
379 count = get_unaligned_le16(pos);
380 pos += 2;
381 left -= 2;
382
383 if (count == 0 || left < count * WPA_SELECTOR_LEN) {
384 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), count %u left %u",
385 __func__, count, left));
386 return _FAIL;
387 }
388
389 for (i = 0; i < count; i++) {
390 *pairwise_cipher |= rtw_get_wpa_cipher_suite(pos);
391
392 pos += WPA_SELECTOR_LEN;
393 left -= WPA_SELECTOR_LEN;
394 }
395 } else if (left == 1) {
396 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)", __func__));
397 return _FAIL;
398 }
399
400 if (is_8021x) {
401 if (left >= 6) {
402 pos += 2;
403 if (!memcmp(pos, SUITE_1X, 4)) {
404 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s : there has 802.1x auth\n", __func__));
405 *is_8021x = 1;
406 }
407 }
408 }
409
410 return ret;
411 }
412
rtw_parse_wpa2_ie(u8 * rsn_ie,int rsn_ie_len,int * group_cipher,int * pairwise_cipher,int * is_8021x)413 int rtw_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher, int *pairwise_cipher, int *is_8021x)
414 {
415 int i, ret = _SUCCESS;
416 int left, count;
417 u8 *pos;
418 u8 SUITE_1X[4] = {0x00, 0x0f, 0xac, 0x01};
419
420 if (rsn_ie_len <= 0) {
421 /* No RSN IE - fail silently */
422 return _FAIL;
423 }
424
425 if ((*rsn_ie != WLAN_EID_RSN) || (*(rsn_ie + 1) != (u8)(rsn_ie_len - 2)))
426 return _FAIL;
427
428 pos = rsn_ie;
429 pos += 4;
430 left = rsn_ie_len - 4;
431
432 /* group_cipher */
433 if (left >= RSN_SELECTOR_LEN) {
434 *group_cipher = rtw_get_wpa2_cipher_suite(pos);
435
436 pos += RSN_SELECTOR_LEN;
437 left -= RSN_SELECTOR_LEN;
438
439 } else if (left > 0) {
440 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie length mismatch, %u too much", __func__, left));
441 return _FAIL;
442 }
443
444 /* pairwise_cipher */
445 if (left >= 2) {
446 count = get_unaligned_le16(pos);
447 pos += 2;
448 left -= 2;
449
450 if (count == 0 || left < count * RSN_SELECTOR_LEN) {
451 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie count botch (pairwise), count %u left %u",
452 __func__, count, left));
453 return _FAIL;
454 }
455
456 for (i = 0; i < count; i++) {
457 *pairwise_cipher |= rtw_get_wpa2_cipher_suite(pos);
458
459 pos += RSN_SELECTOR_LEN;
460 left -= RSN_SELECTOR_LEN;
461 }
462
463 } else if (left == 1) {
464 RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("%s: ie too short (for key mgmt)", __func__));
465
466 return _FAIL;
467 }
468
469 if (is_8021x) {
470 if (left >= 6) {
471 pos += 2;
472 if (!memcmp(pos, SUITE_1X, 4)) {
473 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s (): there has 802.1x auth\n", __func__));
474 *is_8021x = 1;
475 }
476 }
477 }
478 return ret;
479 }
480
rtw_get_sec_ie(u8 * in_ie,uint in_len,u8 * rsn_ie,u16 * rsn_len,u8 * wpa_ie,u16 * wpa_len)481 void rtw_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len, u8 *wpa_ie, u16 *wpa_len)
482 {
483 u8 authmode, sec_idx, i;
484 u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
485 uint cnt;
486
487 /* Search required WPA or WPA2 IE and copy to sec_ie[] */
488
489 cnt = _TIMESTAMP_ + _BEACON_ITERVAL_ + _CAPABILITY_;
490
491 sec_idx = 0;
492
493 while (cnt < in_len) {
494 authmode = in_ie[cnt];
495
496 if ((authmode == WLAN_EID_VENDOR_SPECIFIC) && (!memcmp(&in_ie[cnt + 2], &wpa_oui[0], 4))) {
497 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
498 ("\n rtw_get_wpa_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n",
499 sec_idx, in_ie[cnt + 1] + 2));
500
501 if (wpa_ie) {
502 memcpy(wpa_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
503
504 for (i = 0; i < (in_ie[cnt + 1] + 2); i += 8) {
505 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
506 ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
507 wpa_ie[i], wpa_ie[i + 1], wpa_ie[i + 2], wpa_ie[i + 3], wpa_ie[i + 4],
508 wpa_ie[i + 5], wpa_ie[i + 6], wpa_ie[i + 7]));
509 }
510 }
511
512 *wpa_len = in_ie[cnt + 1] + 2;
513 cnt += in_ie[cnt + 1] + 2; /* get next */
514 } else {
515 if (authmode == WLAN_EID_RSN) {
516 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
517 ("\n get_rsn_ie: sec_idx =%d in_ie[cnt+1]+2 =%d\n",
518 sec_idx, in_ie[cnt + 1] + 2));
519
520 if (rsn_ie) {
521 memcpy(rsn_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
522
523 for (i = 0; i < (in_ie[cnt + 1] + 2); i += 8) {
524 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
525 ("\n %2x,%2x,%2x,%2x,%2x,%2x,%2x,%2x\n",
526 rsn_ie[i], rsn_ie[i + 1], rsn_ie[i + 2], rsn_ie[i + 3], rsn_ie[i + 4],
527 rsn_ie[i + 5], rsn_ie[i + 6], rsn_ie[i + 7]));
528 }
529 }
530
531 *rsn_len = in_ie[cnt + 1] + 2;
532 cnt += in_ie[cnt + 1] + 2; /* get next */
533 } else {
534 cnt += in_ie[cnt + 1] + 2; /* get next */
535 }
536 }
537 }
538 }
539
rtw_is_wps_ie(u8 * ie_ptr,uint * wps_ielen)540 u8 rtw_is_wps_ie(u8 *ie_ptr, uint *wps_ielen)
541 {
542 u8 match = false;
543 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
544
545 if (!ie_ptr)
546 return match;
547
548 eid = ie_ptr[0];
549
550 if ((eid == WLAN_EID_VENDOR_SPECIFIC) && (!memcmp(&ie_ptr[2], wps_oui, 4))) {
551 *wps_ielen = ie_ptr[1] + 2;
552 match = true;
553 }
554 return match;
555 }
556
557 /**
558 * rtw_get_wps_ie - Search WPS IE from a series of ies
559 * @in_ie: Address of ies to search
560 * @in_len: Length limit from in_ie
561 * @wps_ie: If not NULL and WPS IE is found, WPS IE will be copied to the buf starting from wps_ie
562 * @wps_ielen: If not NULL and WPS IE is found, will set to the length of the entire WPS IE
563 *
564 * Returns: The address of the WPS IE found, or NULL
565 */
rtw_get_wps_ie(u8 * in_ie,uint in_len,u8 * wps_ie,uint * wps_ielen)566 u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
567 {
568 uint cnt;
569 u8 *wpsie_ptr = NULL;
570 u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
571
572 if (wps_ielen)
573 *wps_ielen = 0;
574
575 if (!in_ie || in_len <= 0)
576 return wpsie_ptr;
577
578 cnt = 0;
579
580 while (cnt < in_len) {
581 eid = in_ie[cnt];
582
583 if ((eid == WLAN_EID_VENDOR_SPECIFIC) && (!memcmp(&in_ie[cnt + 2], wps_oui, 4))) {
584 wpsie_ptr = &in_ie[cnt];
585
586 if (wps_ie)
587 memcpy(wps_ie, &in_ie[cnt], in_ie[cnt + 1] + 2);
588
589 if (wps_ielen)
590 *wps_ielen = in_ie[cnt + 1] + 2;
591
592 cnt += in_ie[cnt + 1] + 2;
593
594 break;
595 }
596 cnt += in_ie[cnt + 1] + 2; /* goto next */
597 }
598 return wpsie_ptr;
599 }
600
601 /**
602 * rtw_get_wps_attr - Search a specific WPS attribute from a given WPS IE
603 * @wps_ie: Address of WPS IE to search
604 * @wps_ielen: Length limit from wps_ie
605 * @target_attr_id: The attribute ID of WPS attribute to search
606 * @buf_attr: If not NULL and the WPS attribute is found, WPS attribute will be copied to the buf starting from buf_attr
607 * @len_attr: If not NULL and the WPS attribute is found, will set to the length of the entire WPS attribute
608 *
609 * Returns: the address of the specific WPS attribute found, or NULL
610 */
rtw_get_wps_attr(u8 * wps_ie,uint wps_ielen,u16 target_attr_id,u8 * buf_attr,u32 * len_attr)611 u8 *rtw_get_wps_attr(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_attr, u32 *len_attr)
612 {
613 u8 *attr_ptr = NULL;
614 u8 *target_attr_ptr = NULL;
615 u8 wps_oui[4] = {0x00, 0x50, 0xF2, 0x04};
616
617 if (len_attr)
618 *len_attr = 0;
619
620 if ((wps_ie[0] != WLAN_EID_VENDOR_SPECIFIC) ||
621 (memcmp(wps_ie + 2, wps_oui, 4)))
622 return attr_ptr;
623
624 /* 6 = 1(Element ID) + 1(Length) + 4(WPS OUI) */
625 attr_ptr = wps_ie + 6; /* goto first attr */
626
627 while (attr_ptr - wps_ie < wps_ielen) {
628 /* 4 = 2(Attribute ID) + 2(Length) */
629 u16 attr_id = get_unaligned_be16(attr_ptr);
630 u16 attr_data_len = get_unaligned_be16(attr_ptr + 2);
631 u16 attr_len = attr_data_len + 4;
632
633 if (attr_id == target_attr_id) {
634 target_attr_ptr = attr_ptr;
635 if (buf_attr)
636 memcpy(buf_attr, attr_ptr, attr_len);
637 if (len_attr)
638 *len_attr = attr_len;
639 break;
640 }
641 attr_ptr += attr_len; /* goto next */
642 }
643 return target_attr_ptr;
644 }
645
646 /**
647 * rtw_get_wps_attr_content - Search a specific WPS attribute content from a given WPS IE
648 * @wps_ie: Address of WPS IE to search
649 * @wps_ielen: Length limit from wps_ie
650 * @target_attr_id: The attribute ID of WPS attribute to search
651 * @buf_content: If not NULL and the WPS attribute is found, WPS attribute content will be copied to the buf starting from buf_content
652 * @len_content: If not NULL and the WPS attribute is found, will set to the length of the WPS attribute content
653 *
654 * Returns: the address of the specific WPS attribute content found, or NULL
655 */
rtw_get_wps_attr_content(u8 * wps_ie,uint wps_ielen,u16 target_attr_id,u8 * buf_content,uint * len_content)656 u8 *rtw_get_wps_attr_content(u8 *wps_ie, uint wps_ielen, u16 target_attr_id, u8 *buf_content, uint *len_content)
657 {
658 u8 *attr_ptr;
659 u32 attr_len;
660
661 if (len_content)
662 *len_content = 0;
663
664 attr_ptr = rtw_get_wps_attr(wps_ie, wps_ielen, target_attr_id, NULL, &attr_len);
665
666 if (attr_ptr && attr_len) {
667 if (buf_content)
668 memcpy(buf_content, attr_ptr + 4, attr_len - 4);
669
670 if (len_content)
671 *len_content = attr_len - 4;
672
673 return attr_ptr + 4;
674 }
675
676 return NULL;
677 }
678
rtw_ieee802_11_parse_vendor_specific(u8 * pos,uint elen,struct rtw_ieee802_11_elems * elems,int show_errors)679 static int rtw_ieee802_11_parse_vendor_specific(u8 *pos, uint elen,
680 struct rtw_ieee802_11_elems *elems, int show_errors)
681 {
682 unsigned int oui;
683
684 /*
685 * first 3 bytes in vendor specific information element are the IEEE
686 * OUI of the vendor. The following byte is used a vendor specific
687 * sub-type.
688 */
689 if (elen < 4) {
690 if (show_errors) {
691 DBG_88E("short vendor specific information element ignored (len=%lu)\n",
692 (unsigned long)elen);
693 }
694 return -1;
695 }
696
697 oui = RTW_GET_BE24(pos);
698 switch (oui) {
699 case OUI_MICROSOFT:
700 /*
701 * Microsoft/Wi-Fi information elements are further typed and
702 * subtyped
703 */
704 switch (pos[3]) {
705 case 1:
706 /*
707 * Microsoft OUI (00:50:F2) with OUI Type 1:
708 * real WPA information element
709 */
710 elems->wpa_ie = pos;
711 elems->wpa_ie_len = elen;
712 break;
713 case WME_OUI_TYPE: /* this is a Wi-Fi WME info. element */
714 if (elen < 5) {
715 DBG_88E("short WME information element ignored (len=%lu)\n",
716 (unsigned long)elen);
717 return -1;
718 }
719 switch (pos[4]) {
720 case WME_OUI_SUBTYPE_INFORMATION_ELEMENT:
721 case WME_OUI_SUBTYPE_PARAMETER_ELEMENT:
722 elems->wme = pos;
723 elems->wme_len = elen;
724 break;
725 case WME_OUI_SUBTYPE_TSPEC_ELEMENT:
726 elems->wme_tspec = pos;
727 elems->wme_tspec_len = elen;
728 break;
729 default:
730 DBG_88E("unknown WME information element ignored (subtype=%d len=%lu)\n",
731 pos[4], (unsigned long)elen);
732 return -1;
733 }
734 break;
735 case 4:
736 /* Wi-Fi Protected Setup (WPS) IE */
737 elems->wps_ie = pos;
738 elems->wps_ie_len = elen;
739 break;
740 default:
741 DBG_88E("Unknown Microsoft information element ignored (type=%d len=%lu)\n",
742 pos[3], (unsigned long)elen);
743 return -1;
744 }
745 break;
746
747 case OUI_BROADCOM:
748 switch (pos[3]) {
749 case VENDOR_HT_CAPAB_OUI_TYPE:
750 elems->vendor_ht_cap = pos;
751 elems->vendor_ht_cap_len = elen;
752 break;
753 default:
754 DBG_88E("Unknown Broadcom information element ignored (type=%d len=%lu)\n",
755 pos[3], (unsigned long)elen);
756 return -1;
757 }
758 break;
759 default:
760 DBG_88E("unknown vendor specific information element ignored (vendor OUI %3phC len=%lu)\n",
761 pos, (unsigned long)elen);
762 return -1;
763 }
764 return 0;
765 }
766
767 /**
768 * ieee802_11_parse_elems - Parse information elements in management frames
769 * @start: Pointer to the start of ies
770 * @len: Length of IE buffer in octets
771 * @elems: Data structure for parsed elements
772 * @show_errors: Whether to show parsing errors in debug log
773 * Returns: Parsing result
774 */
rtw_ieee802_11_parse_elems(u8 * start,uint len,struct rtw_ieee802_11_elems * elems,int show_errors)775 enum parse_res rtw_ieee802_11_parse_elems(u8 *start, uint len,
776 struct rtw_ieee802_11_elems *elems,
777 int show_errors)
778 {
779 uint left = len;
780 u8 *pos = start;
781 int unknown = 0;
782
783 memset(elems, 0, sizeof(*elems));
784
785 while (left >= 2) {
786 u8 id, elen;
787
788 id = *pos++;
789 elen = *pos++;
790 left -= 2;
791
792 if (elen > left) {
793 if (show_errors) {
794 DBG_88E("IEEE 802.11 element parse failed (id=%d elen=%d left=%lu)\n",
795 id, elen, (unsigned long)left);
796 }
797 return ParseFailed;
798 }
799
800 switch (id) {
801 case WLAN_EID_SSID:
802 elems->ssid = pos;
803 elems->ssid_len = elen;
804 break;
805 case WLAN_EID_SUPP_RATES:
806 elems->supp_rates = pos;
807 elems->supp_rates_len = elen;
808 break;
809 case WLAN_EID_FH_PARAMS:
810 elems->fh_params = pos;
811 elems->fh_params_len = elen;
812 break;
813 case WLAN_EID_DS_PARAMS:
814 elems->ds_params = pos;
815 elems->ds_params_len = elen;
816 break;
817 case WLAN_EID_CF_PARAMS:
818 elems->cf_params = pos;
819 elems->cf_params_len = elen;
820 break;
821 case WLAN_EID_TIM:
822 elems->tim = pos;
823 elems->tim_len = elen;
824 break;
825 case WLAN_EID_IBSS_PARAMS:
826 elems->ibss_params = pos;
827 elems->ibss_params_len = elen;
828 break;
829 case WLAN_EID_CHALLENGE:
830 elems->challenge = pos;
831 elems->challenge_len = elen;
832 break;
833 case WLAN_EID_ERP_INFO:
834 elems->erp_info = pos;
835 elems->erp_info_len = elen;
836 break;
837 case WLAN_EID_EXT_SUPP_RATES:
838 elems->ext_supp_rates = pos;
839 elems->ext_supp_rates_len = elen;
840 break;
841 case WLAN_EID_VENDOR_SPECIFIC:
842 if (rtw_ieee802_11_parse_vendor_specific(pos, elen, elems, show_errors))
843 unknown++;
844 break;
845 case WLAN_EID_RSN:
846 elems->rsn_ie = pos;
847 elems->rsn_ie_len = elen;
848 break;
849 case WLAN_EID_PWR_CAPABILITY:
850 elems->power_cap = pos;
851 elems->power_cap_len = elen;
852 break;
853 case WLAN_EID_SUPPORTED_CHANNELS:
854 elems->supp_channels = pos;
855 elems->supp_channels_len = elen;
856 break;
857 case WLAN_EID_MOBILITY_DOMAIN:
858 elems->mdie = pos;
859 elems->mdie_len = elen;
860 break;
861 case WLAN_EID_FAST_BSS_TRANSITION:
862 elems->ftie = pos;
863 elems->ftie_len = elen;
864 break;
865 case WLAN_EID_TIMEOUT_INTERVAL:
866 elems->timeout_int = pos;
867 elems->timeout_int_len = elen;
868 break;
869 case WLAN_EID_HT_CAPABILITY:
870 elems->ht_capabilities = pos;
871 elems->ht_capabilities_len = elen;
872 break;
873 case WLAN_EID_HT_OPERATION:
874 elems->ht_operation = pos;
875 elems->ht_operation_len = elen;
876 break;
877 default:
878 unknown++;
879 if (!show_errors)
880 break;
881 DBG_88E("IEEE 802.11 element parse ignored unknown element (id=%d elen=%d)\n",
882 id, elen);
883 break;
884 }
885 left -= elen;
886 pos += elen;
887 }
888 if (left)
889 return ParseFailed;
890 return unknown ? ParseUnknown : ParseOK;
891 }
892
rtw_macaddr_cfg(u8 * mac_addr)893 void rtw_macaddr_cfg(u8 *mac_addr)
894 {
895 u8 mac[ETH_ALEN];
896
897 if (!mac_addr)
898 return;
899
900 if (rtw_initmac && mac_pton(rtw_initmac, mac)) {
901 /* Users specify the mac address */
902 ether_addr_copy(mac_addr, mac);
903 } else {
904 /* Use the mac address stored in the Efuse */
905 ether_addr_copy(mac, mac_addr);
906 }
907
908 if (is_broadcast_ether_addr(mac) || is_zero_ether_addr(mac)) {
909 eth_random_addr(mac_addr);
910 DBG_88E("MAC Address from efuse error, assign random one !!!\n");
911 }
912
913 DBG_88E("%s MAC Address = %pM\n", __func__, mac_addr);
914 }
915
rtw_get_cipher_info(struct wlan_network * pnetwork)916 static int rtw_get_cipher_info(struct wlan_network *pnetwork)
917 {
918 uint wpa_ielen;
919 unsigned char *pbuf;
920 int group_cipher = 0, pairwise_cipher = 0, is8021x = 0;
921 int ret = _FAIL;
922
923 pbuf = rtw_get_wpa_ie(&pnetwork->network.ies[12], &wpa_ielen, pnetwork->network.ie_length - 12);
924
925 if (pbuf && (wpa_ielen > 0)) {
926 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: wpa_ielen: %d", __func__, wpa_ielen));
927 if (rtw_parse_wpa_ie(pbuf, wpa_ielen + 2, &group_cipher, &pairwise_cipher, &is8021x) == _SUCCESS) {
928 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
929 pnetwork->BcnInfo.group_cipher = group_cipher;
930 pnetwork->BcnInfo.is_8021x = is8021x;
931 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_,
932 ("%s: pnetwork->pairwise_cipher: %d, is_8021x is %d",
933 __func__, pnetwork->BcnInfo.pairwise_cipher,
934 pnetwork->BcnInfo.is_8021x));
935 ret = _SUCCESS;
936 }
937 } else {
938 pbuf = rtw_get_wpa2_ie(&pnetwork->network.ies[12], &wpa_ielen, pnetwork->network.ie_length - 12);
939
940 if (pbuf && (wpa_ielen > 0)) {
941 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE\n"));
942 if (rtw_parse_wpa2_ie(pbuf, wpa_ielen + 2, &group_cipher, &pairwise_cipher, &is8021x) == _SUCCESS) {
943 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("get RSN IE OK!!!\n"));
944 pnetwork->BcnInfo.pairwise_cipher = pairwise_cipher;
945 pnetwork->BcnInfo.group_cipher = group_cipher;
946 pnetwork->BcnInfo.is_8021x = is8021x;
947 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->pairwise_cipher: %d, pnetwork->group_cipher is %d, is_8021x is %d",
948 __func__, pnetwork->BcnInfo.pairwise_cipher,
949 pnetwork->BcnInfo.group_cipher, pnetwork->BcnInfo.is_8021x));
950 ret = _SUCCESS;
951 }
952 }
953 }
954
955 return ret;
956 }
957
rtw_get_bcn_info(struct wlan_network * pnetwork)958 void rtw_get_bcn_info(struct wlan_network *pnetwork)
959 {
960 unsigned short cap = 0;
961 u8 bencrypt = 0;
962 __le16 le_tmp;
963 u16 wpa_len = 0, rsn_len = 0;
964 struct HT_info_element *pht_info = NULL;
965 uint len;
966 unsigned char *p;
967
968 memcpy(&le_tmp, rtw_get_capability_from_ie(pnetwork->network.ies), 2);
969 cap = le16_to_cpu(le_tmp);
970 if (cap & WLAN_CAPABILITY_PRIVACY) {
971 bencrypt = 1;
972 pnetwork->network.Privacy = 1;
973 } else {
974 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_OPENSYS;
975 }
976 rtw_get_sec_ie(pnetwork->network.ies, pnetwork->network.ie_length, NULL, &rsn_len, NULL, &wpa_len);
977 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: ssid =%s\n", __func__, pnetwork->network.ssid.ssid));
978 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: wpa_len =%d rsn_len =%d\n", __func__, wpa_len, rsn_len));
979 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: ssid =%s\n", __func__, pnetwork->network.ssid.ssid));
980 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: wpa_len =%d rsn_len =%d\n", __func__, wpa_len, rsn_len));
981
982 if (rsn_len > 0) {
983 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA2;
984 } else if (wpa_len > 0) {
985 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WPA;
986 } else {
987 if (bencrypt)
988 pnetwork->BcnInfo.encryp_protocol = ENCRYP_PROTOCOL_WEP;
989 }
990 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->encryp_protocol is %x\n",
991 __func__, pnetwork->BcnInfo.encryp_protocol));
992 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("%s: pnetwork->encryp_protocol is %x\n",
993 __func__, pnetwork->BcnInfo.encryp_protocol));
994 rtw_get_cipher_info(pnetwork);
995
996 /* get bwmode and ch_offset */
997 /* parsing HT_CAP_IE */
998 p = rtw_get_ie(pnetwork->network.ies + _FIXED_IE_LENGTH_, WLAN_EID_HT_CAPABILITY, &len, pnetwork->network.ie_length - _FIXED_IE_LENGTH_);
999 if (p && len > 0) {
1000 struct ieee80211_ht_cap *ht_cap =
1001 (struct ieee80211_ht_cap *)(p + 2);
1002
1003 pnetwork->BcnInfo.ht_cap_info = le16_to_cpu(ht_cap->cap_info);
1004 } else {
1005 pnetwork->BcnInfo.ht_cap_info = 0;
1006 }
1007 /* parsing HT_INFO_IE */
1008 p = rtw_get_ie(pnetwork->network.ies + _FIXED_IE_LENGTH_, WLAN_EID_HT_OPERATION, &len, pnetwork->network.ie_length - _FIXED_IE_LENGTH_);
1009 if (p && len > 0) {
1010 pht_info = (struct HT_info_element *)(p + 2);
1011 pnetwork->BcnInfo.ht_info_infos_0 = pht_info->infos[0];
1012 } else {
1013 pnetwork->BcnInfo.ht_info_infos_0 = 0;
1014 }
1015 }
1016
1017 /* show MCS rate, unit: 100Kbps */
rtw_mcs_rate(u8 rf_type,u8 bw_40MHz,u8 short_GI_20,u8 short_GI_40,unsigned char * MCS_rate)1018 u16 rtw_mcs_rate(u8 rf_type, u8 bw_40MHz, u8 short_GI_20, u8 short_GI_40, unsigned char *MCS_rate)
1019 {
1020 u16 max_rate = 0;
1021
1022 if (rf_type == RF_1T1R) {
1023 if (MCS_rate[0] & BIT(7))
1024 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1500 : 1350) : ((short_GI_20) ? 722 : 650);
1025 else if (MCS_rate[0] & BIT(6))
1026 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1350 : 1215) : ((short_GI_20) ? 650 : 585);
1027 else if (MCS_rate[0] & BIT(5))
1028 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1029 else if (MCS_rate[0] & BIT(4))
1030 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1031 else if (MCS_rate[0] & BIT(3))
1032 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1033 else if (MCS_rate[0] & BIT(2))
1034 max_rate = (bw_40MHz) ? ((short_GI_40) ? 450 : 405) : ((short_GI_20) ? 217 : 195);
1035 else if (MCS_rate[0] & BIT(1))
1036 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1037 else if (MCS_rate[0] & BIT(0))
1038 max_rate = (bw_40MHz) ? ((short_GI_40) ? 150 : 135) : ((short_GI_20) ? 72 : 65);
1039 } else {
1040 if (MCS_rate[1]) {
1041 if (MCS_rate[1] & BIT(7))
1042 max_rate = (bw_40MHz) ? ((short_GI_40) ? 3000 : 2700) : ((short_GI_20) ? 1444 : 1300);
1043 else if (MCS_rate[1] & BIT(6))
1044 max_rate = (bw_40MHz) ? ((short_GI_40) ? 2700 : 2430) : ((short_GI_20) ? 1300 : 1170);
1045 else if (MCS_rate[1] & BIT(5))
1046 max_rate = (bw_40MHz) ? ((short_GI_40) ? 2400 : 2160) : ((short_GI_20) ? 1156 : 1040);
1047 else if (MCS_rate[1] & BIT(4))
1048 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1800 : 1620) : ((short_GI_20) ? 867 : 780);
1049 else if (MCS_rate[1] & BIT(3))
1050 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1051 else if (MCS_rate[1] & BIT(2))
1052 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1053 else if (MCS_rate[1] & BIT(1))
1054 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1055 else if (MCS_rate[1] & BIT(0))
1056 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1057 } else {
1058 if (MCS_rate[0] & BIT(7))
1059 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1500 : 1350) : ((short_GI_20) ? 722 : 650);
1060 else if (MCS_rate[0] & BIT(6))
1061 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1350 : 1215) : ((short_GI_20) ? 650 : 585);
1062 else if (MCS_rate[0] & BIT(5))
1063 max_rate = (bw_40MHz) ? ((short_GI_40) ? 1200 : 1080) : ((short_GI_20) ? 578 : 520);
1064 else if (MCS_rate[0] & BIT(4))
1065 max_rate = (bw_40MHz) ? ((short_GI_40) ? 900 : 810) : ((short_GI_20) ? 433 : 390);
1066 else if (MCS_rate[0] & BIT(3))
1067 max_rate = (bw_40MHz) ? ((short_GI_40) ? 600 : 540) : ((short_GI_20) ? 289 : 260);
1068 else if (MCS_rate[0] & BIT(2))
1069 max_rate = (bw_40MHz) ? ((short_GI_40) ? 450 : 405) : ((short_GI_20) ? 217 : 195);
1070 else if (MCS_rate[0] & BIT(1))
1071 max_rate = (bw_40MHz) ? ((short_GI_40) ? 300 : 270) : ((short_GI_20) ? 144 : 130);
1072 else if (MCS_rate[0] & BIT(0))
1073 max_rate = (bw_40MHz) ? ((short_GI_40) ? 150 : 135) : ((short_GI_20) ? 72 : 65);
1074 }
1075 }
1076 return max_rate;
1077 }
1078